Weather on May 15
New Haven, CT
55 Years of Data
Avg High
69°F
Avg Low
51°F
Warmest
1976
73°F avg
Coldest
1978
48°F avg
About This Date
May 15th in New Haven, CT typically brings mild spring weather, with average highs around 69°F and lows near 51°F. Over 52 years of records, the warmest May 15th was in 1976 (73°F average), while the coldest was 1978 (48°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 40% of May 15th dates historically, with the wettest May 15th recording 2.72" of rain. The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in New Haven, CT? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 61° | 66° | 0.15" | — |
| 2024 | 65° | 60° | 62° | 2.72" | — |
| 2023 | 70° | 42° | 56° | — | — |
| 2022 | 77° | 60° | 69° | 0.08" | — |
| 2021 | 75° | 47° | 61° | — | — |
| 2020 | 80° | 54° | 67° | 1.3" | — |
| 2019 | 68° | 48° | 58° | 0.03" | — |
| 2018 | 75° | 57° | 66° | 1.35" | — |
| 2017 | 67° | 51° | 59° | — | — |
| 2016 | 58° | 46° | 52° | — | — |
| 2015 | 71° | 42° | 57° | — | — |
| 2014 | 72° | 57° | 64° | 0.25" | — |
| 2013 | 63° | 38° | 50° | 0.03" | — |
| 2012 | 67° | 60° | 63° | 1.91" | — |
| 2011 | 66° | 54° | 60° | 0.25" | — |
| 2010 | 74° | 54° | 64° | — | — |
| 2009 | 71° | 55° | 63° | 0.03" | — |
| 2008 | 67° | 52° | 59° | — | — |
| 2007 | 74° | 54° | 64° | — | — |
| 2006 | 59° | 49° | 54° | 0.76" | — |
| 2005 | 67° | 53° | 60° | — | — |
| 2004 | 77° | 56° | 66° | 0.05" | — |
| 2003 | 66° | 45° | 55° | — | — |
| 2002 | 66° | 45° | 55° | — | — |
| 2001 | 66° | 47° | 56° | — | — |
| 2000 | 63° | 42° | 52° | — | — |
| 1996 | 78° | 33° | 56° | — | — |
| 1995 | 64° | 49° | 56° | 0.51" | — |
| 1994 | 73° | 39° | 56° | — | — |
| 1993 | 69° | 40° | 54° | — | — |
| 1992 | 74° | 58° | 66° | — | — |
| 1991 | 79° | 54° | 66° | — | — |
| 1990 | 74° | 55° | 64° | — | — |
| 1989 | 71° | 50° | 61° | — | — |
| 1988 | 70° | 51° | 60° | — | — |
| 1987 | 71° | 52° | 61° | 0.38" | — |
| 1986 | 63° | 47° | 55° | — | — |
| 1985 | 63° | 60° | 61° | — | — |
| 1984 | 58° | 43° | 50° | — | — |
| 1983 | 64° | 53° | 59° | 0.3" | — |
| 1982 | 77° | 47° | 62° | — | — |
| 1981 | 70° | 56° | 63° | 1.91" | — |
| 1980 | 71° | 49° | 60° | — | — |
| 1979 | 72° | 56° | 64° | 0.13" | — |
| 1978coldest | 49° | 48° | 48° | — | — |
| 1977 | 73° | 47° | 60° | — | — |
| 1976warmest | 84° | 63° | 73° | 0.13" | — |
| 1975 | 70° | 50° | 60° | — | — |
| 1974 | 71° | 57° | 64° | — | — |
| 1973 | 64° | 53° | 59° | 0.38" | — |
| 1972 | 67° | 55° | 61° | 2.59" | — |
| 1971 | 70° | 44° | 57° | — | — |
52 years of data from NEW HAVEN